Mine did that when it had a hornet nest inside the
combustion chamber. That blocked the flow of fresh air to the combustion
chamber. It's not getting enough air so the gas isn't burning completely
...hence, the black smoke.
MARC WEIMER
Punxsutawney, PA - Home of the Groundhog #15767 1963 Globe Trotter 1971 Globe Trotter http://users.penn.com/~mweimer |